Why would a company name their product “Ass-Jet” using the Japanese Katakana phonetic script reserved for writing foreign words?
It’s simple really. The bug spray’s name is actually “Earth Jet” but since Japanese language doesn’t have the “th” sound and “r” is problematic, the English word “earth” comes out mangled as “ass” (that is, “earth” sounds like “aa-su“). Enjoy.
Yes, you hearing it correctly. In the first line of the TV commercial, Hiromi Go* says in engrish is, “Hey, go away!” followed the refrain of, “GO! GO! JET! ASSJET!!”